Apparatus for feeding molten glass



Jur le 13, 1933. K PEILER 1,914,156

APPARATUS FOR FEEDING MOLTEN GLASS Filed June '11, 1950 4 Sheets-Sheet 1 1720671602"; Kar'ZEPei i6?" Wt'fn 668. $3 W ym f I Aiforne /s June 13, 1933. K. E. PEILER APPARATUS FOR FEEDING MOLTEN GLASS 4 Sheets-Sheet 2 Filed June 11, 1950 Wt'lness 0. 401;

June 13, 1933. K. E. PEILER APPARATUS FOR FEEDING MOLTEN GLASS Filed June 11, 1930 4 Sheets-Sheet 3 lnvenior; .KarZEPet'Zsr Wt'fncss 4. M

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June 13, 1933. K. E. PEILER 1;914,156

APPARATUS FOR FEEDING MOLTEN GLASS Filed June 11, 1930 4 Sheets-Sheet 4 Fig. i 4 Fig. 6.

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Patented June 13, 1933 UNITED STATES PATENT OFFICE KARL E. PEILER, OF WEST HARTFORD,- CONNECTICUT, ASSIGNOR TO HARTFORD- EMPIRE COMPANY, OF HARTFORD, CONNECTICUT, A CORPORATION OF DELAWARE APPARATUS FOR FEEDING MOLTEN GLASS Application filed June 11,

This invention relates to means for feed.- ing charges of molten glass from a forehearth or bowl to a preliminary shaping mold. It is an improvement on the means for feeding glass described in the copending United States application of George Rowe, Serial No. 396,242, filed Sept. 30, 1929, and the device herein shown in especially adapted to perform the method of the aforesaid Rowe application, though its utility is not limited to such method.

In the said Rowe application, there is described a method of and apparatus for feeding charges of molten glass, which is characterized by the fact that the glass is forced into the mold preferably while suction is created within the mold, and while the mold and the feeder orifice are in close proximity. In practicing this method by the apparatus indicated in the Rowe application, the feeder orifice and the mold are periodically brought into proximity by moving the mold vertically upward toward the orifice. In using this means of feeding, it is necessary that a. forming machine be designed particularly for that purpose, as heretofore it is only occasionally, if ever, that any vertical movement is given to'the blank or preliminary molds.

The principal feature of the present invention, therefore, is the provision of means by which standard types of forming machines may be used to aid in performing the method of the aforesaid Rowe application, as well as other methods. This is accomplished by the novel provision of a feeding bowl and associated parts which are adapted for vertical movement, in association with molds which move in a horizontal plane, and in association with a stationary-forehearth or furnace extension.

A further feature of the present invention is the provision of a reciprocating feeder bowl and coacting reciprocating discharge controlling plunger, the arrangement being such that the bowl and plunger may be reciprocated together and that additionally the plunger may be reciprocated relative to the orifice in the bowl. By such provision, the desired relative movement of the orifice and the mold is obtained'while maintaining 1930. Serial No. 460,353.

the well-known and desirable relationship between the plunger and the orifice.

These and other features of the invention will appear from the following specification when considered in connection with the ac- E. companying drawings, in which Figure 1 is a side elevation of a preferred embodiment of my invention;

Fig. 2 is an end elevation thereof;

Fig. 3 is a vertical section through the forehearth and bowl; and I Figs. 4, 5, 6, 7 and 8 are sections through the'bowl and preliminary mold, showing successive steps in the operation of the apparatus.

In the drawings there is shown a mold table 10 of a glass fabricating machine, upon which is shown one of a series of blank or preliminary molds 11.

A feeder, including the bowl 12, a recipro cating discharge controlling plunger 13 and its operating mechanism 14, and shear mechanism 15, is mounted for vertical reciprocation above and adjacent to the mold table. A forehearth or furnace extension 16 is located adj acent to and is designed to feed molten glass to the feeder bowl.

The feeder bowl comprises a glass containing portion consisting of an inner lining 17 having a well-like opening or impul-sion chamber in its bottom terminating in an orifice formed by a suitable orifice ring 18. The well is adapted to receive the lower end of the reciprocating plunger 13 which acts dynamically to control the issuance of the glass through the orifice, having an extrusive effect upon the glass on its downstroke and a retractive effect upon its upstroke.

The lining 17 is surrounded by suitable insulation 19 and the bowl, as a whole, is providedwith a suitable refractory cover 20 having on 'one side an opening 21 into which projects a spout 22 of the forehearth 16. Glass flows from the forehearth over this spout into the bowl under the control of an adjustable gate 23. The entire bowl and covor are held in a metallic frame 24, which frame also carries the plunger and plunger operating mechanism and the shear mechanism, hereinafter described.

The plunger is mounted on the frame 24 for reciprocation with the frame and the bowl and is provided with a suitable operating mechanism also carried by the frame to effect reciprocation of the plunger relative to the bowl and the outlet thereof.

The shears are also mounted on the frame 24 and are provided with suitable adjustments for setting and varying the cutting plane with respect to the orifice.

Also carried by the frame 24 are suitable burners 25 adapted to project flame into the bowl and cover to maintain the glass at a suitable temperature and consistency for the feeding operation.

The frame 24, carrying the aforementioned parts, is mounted for sliding movement in guideways 26 formed in a pair of standards 27. The frame 24 is provided with ears 28 which are connected through adjustable links 29' to the outer ends of levers 30 which are pivoted as at 31 upon a cross member 32 mounted on the standards 27. The inner ends of the levers 30 are connected by suitable links 33 to the crosshead 34 carried on the epd of rod 35 of piston 36 of the air cylinder 3 Air is supplied to and exhausted from the space in the cylinder above and below this piston through the pipes 38 and 39 respectively. This air is supplied in suitable time relation to the operations of the forming machine and of the plunger and shears by the operations of any desired type of timing mechanism, as for example, that shown in the United States patent to Tucker & Reeves, No. 1,654,710, or in my United States Patent No. 1,611,063.

The extent of reciprocation of the frame 24 is limited by the extent of movement of the piston 36, which movement is in turn limited by the adjustable limiting bolts 40 and 41.

The plunger 13 is removably carried by an arm 42 mounted on the rod 43 of piston 44 of an air cylinder 45, which cylinder is fixedly mounted on the frame 24. Suitable connections (not shown) are provided to admit and exhaust air to and from either side of the piston under the control of the timer in propor time relation to effect the desired movement of the plunger. The arm 42 is extended past its mounting on the piston rod 43, and the extension is provided with a hole through which passes a rod 46. This rod serves as a guide to prevent horizontal swinging movement of the plunger. The rod 46 is provided with threads above and below the arm 42 on which are threaded adjustable stop nuts, provided with hand wheels 47 and 48. By regulation of hand wheels 47 and 48, the upper and lower limits of the stroke of the plunger may be regulated.

The shear mechanism is best shown in Fig. 3. As there shown, the frame 24 carries a bracket or extension 49 from which is hung a pneumatically operated shear of the wellknown Howard type, essentially as illustrated in the patent to Hiller, No. 1,732,305, Fig. 2,

the shear illustrated herein, however, not bcing provided, as in the Hiller patent, with the cam actuated mechanism for timing the operations. Generally speaking, the shear mechanism comprises an air cylinder 50 having a piston rod 51 which carries a crosshead 52 which is slidably mounted on the sliding rods 53. These rods 53 carry the pivot of a pair of scissors blades 54. The arrangement is such that the forward projection of the rod 51 operates first to slide the whole shear mechanism, including the rods 53, outwardly until stop nuts 55 strike the stop 56. Thereafter, the further projection of the piston rod 51 acts to close the shears, as is illustrated and described in the aforesaid patent. On the reverse movement of the piston, the shears are forced open and then the mechanism retracted.

The cylinder 50 and the mechanism carried thereon may be adjusted vertically, relative to the outlet, by means of the bolts 57 coacting with slots in the parts 49 and 56. Air is admitted to and exhausted from the two ends of the cylinder 50 through pipes 58 and 59 under the control of suitable valve mechanism which is, in turn, controlled by the timing mechanism.

The forehearth or furnace extension 16 may be of any preferred type such, for instance, as that described in my United States Patent No. 1,656,869, and at its forward end it is provided with an opening 60 communicating with the lip 22, by which means glass may continuously flow to the bowl 12 under the control of the regulating gate 23. The gate is preferably a refractory block mounted, as shown, from the post 61 by a threaded rod coacting with the adjusting nut 62.

A preferred method of operation of the mechanism described is indicated diagram matically in 4 to 8 inclusive. In Fig. 4, the frame 24 with the feeder parts had been moved, through the proper operation of the piston 36, to its lowest position, the plunger 13 then being approximately at the upper end of its stroke and about to begin its descent. Glass has flowed out to a slight extent by gravity, and is entering the upper end of the mold 11.

i The plunger, descending as shown in Fig. 5, positively forces the glass into the mold cavity, this action being aided, if desired, by the application of suction through the neck ring. In Fig. 6, the filling of the mold is shown as completed, the force of the plung er stroke tending to force excess glass slightly beyond the periphery of the mold cavity above the mold. In Fig. 7, the plunger is shown as starting on its upstroke, and at this time, movement of the frame 24, carrying the bowl, has raised the orifice, this raising movement being accompanied by the upward movement of the plunger. These movements cause a necking-in of the glass as shown, preparing the glass for severance. The condition immediately after severance is shown 7 in Fig. 8, the glass stub being retracted sli htly into the orifice, and being raised c ear of the shears, while the severed charge settles into the mold.

After the operation shown in Fig. 8, the mold 11 is moved horizontally and the cycle is repeated, the feeder operating with the next mold which is brought in place by the movement of the mold. table. The charge delivered to the mold as shown in Figs. 4 to 8, is meanwhile acted upon in any usual manner to form a parison.

It is obvious that many departures may be made in my invention as embodied in the foregoing description, without departing from the scope thereof, as set forth in the following claims. 7

I claim:

1. In combination, a vertically movable glass feeding container having a glass discharge outlet, means for reciprocating said container vertically, and means for periodically varying discharge of glass from said outlet independently of the vertical movements of the container, said discharge controlling means being mounted on said container to move vertically therewith.

2. In combination, a vertically movable glass feeding container having a submerged discharge outlet in its bottom, means for moving a charge receiver to and from a position below and in line with said discharge outlet, means for reciprocating said container vertically periodically to vary the distance between said outlet and said charge receiver, a vertically movable rigid implement depending into the glass in said container in alignment with said outlet for regulating discharge through said outlet, means for mounting said implement for movement vertically with said container and for independent movement vertically, and means in addition-to said container for periodically moving said implement vertically.

3. In combination, a vertically movable glass feeding container having a well in its lower portion terminating in a submerged discharge outlet, means for moving a mold to and from a position below and in line with said outlet, means for reciprocating said container vertically periodically to vary the distance between said discharge outlet and said mold, a vertically movable implement hav-- ing its lower end depending into the glass in said well, means for mounting said implement both for movement vertically with said container and for independent vertical movement, and means for reciprocating said implement vertically in said container and with respect to said outlet periodically to, acceler- 7 ate andperiodically to retard discharge of glass through said outlet, and means for periodically severing charges from glass discharged from said outlet. i

4. In combination, a vertically movable glass feeding container having a submerged discharge outlet in its bottom, means for reciprocating said container vertically, means for supplying molten glass to said container, a refractory implement adapted to depend into the glass in the container in alignment with said outlet, means carried by said container and movable therewith for supporting said implement for independent vertical reciprocation toward and from the outlet of said container, means for effecting said independent reciprocation of said implement, and shears movable vertically with said container and operable periodically to sever charges from glass discharged from said outlet.

day of June, 1930.

KARL E. PEILER.

Signed at Hartford, Connecticut, this 6th I 

